CN110892615B - Motor and ventilation fan - Google Patents
Motor and ventilation fan Download PDFInfo
- Publication number
- CN110892615B CN110892615B CN201780091890.3A CN201780091890A CN110892615B CN 110892615 B CN110892615 B CN 110892615B CN 201780091890 A CN201780091890 A CN 201780091890A CN 110892615 B CN110892615 B CN 110892615B
- Authority
- CN
- China
- Prior art keywords
- holding portion
- circuit board
- stator
- motor
- mounting surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims description 9
- 239000000758 substrate Substances 0.000 claims abstract description 22
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
- H02K1/2733—Annular magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
Abstract
The motor is provided with: a stator; a rotor disposed inside the stator; a shaft (8) connected to the rotor and extending along the central axis of the stator; a substrate case (13) provided on one end side of the stator in the direction along the central axis; a circuit board (15) provided on the opposite side of the stator with the substrate case (13) therebetween; a connecting portion provided on a mounting surface (15a) that is the opposite surface of the circuit board (15) facing the stator; a lead wire (40) connected to the connection portion; and a protective tube (41) covering the periphery of the lead (40). A first holding portion (25) protruding toward the mounting surface (15a) from the circuit board (15) and a second holding portion (26) protruding toward the mounting surface (15a) from the circuit board (15) and facing the first holding portion (25) are formed in the board case (13), and the protective pipe (41) is held by being sandwiched between the first holding portion (25) and the second holding portion (26).
Description
Technical Field
The present invention relates to a motor and a ventilation fan including a lead wire for supplying power from the outside.
Background
A dc (direct current) brushless motor as a motor includes: a stator having a core and a winding; a rotor disposed inside the stator; a shaft coupled to the rotor; a bearing supporting the shaft to be rotatable; a terminal plate provided to the stator; and a lead wire for supplying power from the outside. In the motor disclosed in patent document 1, the lead is fixed to the terminal plate using a binding tape.
Prior art documents
Patent document
Patent document 1: japanese patent No. 5805308
Disclosure of Invention
Problems to be solved by the invention
However, in the motor disclosed in patent document 1, since a binding tape is used to fix the lead wire, there is a problem that the number of components increases or the number of man-hours increases.
The present invention has been made in view of the above, and an object thereof is to obtain a motor capable of reducing the number of components and man-hours required for fixing a lead wire.
Means for solving the problems
In order to solve the above problems and achieve the object, the present invention includes: a cylindrical stator; a rotor disposed inside the stator; a shaft coupled to the rotor and extending along a central axis of the stator; a substrate case provided at one end side of the stator in a direction along the central axis; a circuit board provided on the opposite side of the stator with the substrate case interposed therebetween; a connecting portion provided on a mounting surface that is an opposite surface of a surface of the circuit board facing the stator; a lead wire connected to the connection portion; and a protective tube covering the periphery of the lead. The substrate case is provided with a first holding portion that protrudes toward the mounting surface side with respect to the circuit board, and a second holding portion that protrudes toward the mounting surface side with respect to the circuit board and faces the first holding portion, and the protective tube is held by being sandwiched between the first holding portion and the second holding portion.
Effects of the invention
The motor of the present invention has an effect of reducing the number of parts and man-hours required for fixing the lead wires.
Drawings
Fig. 1 is a development view of a DC brushless motor as a motor according to embodiment 1 of the present invention.
Fig. 2 is a plan view of the circuit board according to embodiment 1 as viewed from the mounting surface side.
Fig. 3 is a plan view of the substrate case of embodiment 1.
Fig. 4 is a sectional view taken along line IV-IV shown in fig. 3.
Fig. 5 is a sectional view taken along line V-V shown in fig. 3.
Fig. 6 is a plan view showing a state where a circuit board is fixed to the board case of embodiment 1.
Fig. 7 is a plan view showing modification 1 of the board housing according to embodiment 1.
Fig. 8 is a plan view showing modification 2 of the board housing according to embodiment 1.
Fig. 9 is a sectional view of a ventilation fan mounted with the DC brushless motor according to embodiment 1.
Detailed Description
Hereinafter, a motor and a ventilation fan according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiment.
Embodiment 1.
Fig. 1 is a development view of a DC brushless motor as a motor according to embodiment 1 of the present invention. In a DC brushless motor 1 as a motor, each element is housed inside a housing constituted by a frame 2 and a bracket 3. The frame 2 has a bottomed cylindrical shape and is made of metal. The bracket 3 is formed in a cylindrical shape having a top surface and is made of metal. The bracket 3 is formed with a lead-out opening 3a for leading out a lead wire, which will be described later, from the inside to the outside of the bracket 3.
A cylindrical stator 4 is press-fitted into the frame 2. The stator 4 is configured by winding a coil 6 around a core 5 with an insulator 16 interposed therebetween. The stator 4 is provided with an output pin 14.
An annular rotor 7 is disposed inside the stator 4. A shaft 8 extending along the central axis C of the stator 4 is connected to the rotor 7. One end side of the shaft 8 protrudes to the outside of the frame 2.
A second bearing 9 is provided on the frame 2 side of the connection portion of the shaft 8 to the rotor 7, and a first bearing 10 is provided on the bracket 3 side of the connection portion of the shaft 8 to the rotor 7. The bearings 9 and 10 hold the shaft 8 rotatably about the central axis C. The second bearing 9 is held by a housing formed in the frame 2. The first bearing 10 is held by a housing 12 formed in the bracket 3.
A substrate case 13 is fixed to the stator 4 on the side of one end 4a in the direction along the center axis C. A circuit board 15 is provided on the opposite side of the stator 4 with the substrate case 13 interposed therebetween.
Fig. 2 is a plan view of the circuit board 15 according to embodiment 1 as viewed from the mounting surface 15a side. An electronic component 31 is mounted on a mounting surface 15a of the circuit board 15, which is a surface opposite to the surface facing the stator 4. The electronic component 31 constitutes a function of a driving section, a control section, or a power supply section. The driving unit is exemplified by a three-phase bridge driver in which a motor driver IC and discrete elements of 6 monolithic inverter ICs (Integrated circuits) or IGBTs (insulated Gate Bipolar transistors) are combined. The control unit is exemplified by a configuration using a microcomputer or a plc (programmable Logic controller).
The circuit board 15 has a notch 30, and the notch 30 penetrates a first holding portion 25 and a second holding portion 26 formed in a board case 13 described later. The slit 30 may be formed of a hole as long as the first holding portion 25 and the second holding portion 26 can penetrate therethrough.
The circuit board 15 has a through hole 32, and the through hole 32 penetrates a support portion 18 formed in a board case 13 described later. The circuit board 15 is provided with a connector portion 27 as a connector to which a lead wire described later is connected.
Referring back to fig. 1, the output pins 14 of the stator 4 penetrate through holes, not shown, formed in the substrate case 13, and protrude from the substrate case 13 toward the mounting surface 15a of the circuit board 15. The output pins 14 are electrically connected to the circuit board 15 by soldering or the like.
Fig. 3 is a plan view of the substrate case 13 according to embodiment 1. Fig. 4 is a sectional view taken along line IV-IV shown in fig. 3. Fig. 5 is a sectional view taken along line V-V shown in fig. 3. Fig. 6 is a plan view showing a state in which the circuit board 15 is fixed to the board case 13 of embodiment 1. In fig. 4 and 5, the circuit board 15 fixed to the board case 13 is shown by a broken line.
The substrate case 13 is provided with a protrusion 13a for positioning the circuit board 15. In addition, a prepared hole 13b for a screw is formed in the substrate case 13. The circuit board 15 positioned by the protrusion 13a is fixed by screwing a screw into the prepared hole 13b, whereby the circuit board 15 is fixed and positioned to the board case 13.
The board case 13 is formed with a first holding portion 25 and a second holding portion 26, the first holding portion 25 projects toward the mounting surface 15a side from the circuit board 15 fixed to the board case 13, and the second holding portion 26 projects toward the mounting surface 15a side from the circuit board 15 and faces the first holding portion 25. As shown in fig. 6, the second holding portion 26 is formed at a position closer to the connecting portion 27 than the first holding portion 25.
The first holding portion 25 is formed in an コ shape having the facing surface 25a when viewed along the center axis C. The second holding portion 26 is formed in an コ shape having the facing surface 26a when viewed along the center axis C. The facing surface 25a formed on the first holding portion 25 and the facing surface 26a formed on the second holding portion 26 face each other. When viewed along the center axis C, the width of the facing surface 26a formed in the second holding portion 26 is narrower than the width of the facing surface 25a formed in the first holding portion 25.
The board case 13 is formed with a support portion 18 protruding toward the mounting surface 15a side from the circuit board 15 fixed to the board case 13.
As shown in fig. 6, a connector 40a provided at the tip of the lead 40 is connected to the connection portion 27 of the circuit board 15. The lead wire 40 is wound around the mounting surface 15a of the circuit board 15 (around す from き), and is drawn out of the tray 3 through a drawing opening 3a formed in the tray 3. The lead wire 40 is covered around by a protective tube 41. In the DC brushless motor 1, electric power is supplied from an external power supply to the coil 6 via the lead wire 40 in accordance with a control command from a control unit, not shown, to generate a drive torque for rotating the rotor 7.
The first holding portion 25 and the second holding portion 26 are disposed at positions facing the lead-out opening 3a in a state where the substrate case 13 and the circuit board 15 are accommodated in the inside of the housing constituted by the frame 2 and the bracket 3. Therefore, the lead wire 40 and the protective tube 41 pass through the vicinity of the first holding portion 25 and the second holding portion 26 at the portion drawn out from the drawing opening 3 a. Therefore, the protection pipe 41 can be press-fitted between the facing surface 25a of the first holding portion 25 and the facing surface 26a of the second holding portion 26. The lead 40 and the protective tube 41 are fixed by sandwiching and holding the protective tube 41 between the facing surface 25a and the facing surface 26 a. Therefore, since it is not necessary to use a member such as a binding tape for fixing the lead wire 40, the number of components and the number of man-hours can be reduced. Further, by fixing the lead 40 by the first holding portion 25 and the second holding portion 26, when an external force is applied to the lead 40, stress is less likely to be applied to the connector 40a, and therefore the connection state between the connector 40a and the connection portion 27 can be stably maintained.
As described above, the width of the facing surface 26a formed in the second holding portion 26 is smaller than the width of the facing surface 25a formed in the first holding portion 25 when viewed along the center axis C. The second holding portion 26 provided closer to the connection portion 27 than the first holding portion 25 abuts against the protective tube 41 from the inside of the bent portion of the lead 40. If the width of the facing surface 26a of the second holding portion 26 is wide, the distance required from the lead-out opening 3a to the bending of the lead 40 becomes long, and thus the lead 40 heading toward the connection portion 27 may need to be bent at a steep angle. On the other hand, in embodiment 1, since the width of the facing surface 26a formed in the second holding portion 26 is smaller than the width of the facing surface 25a formed in the first holding portion 25, the distance required from the drawing-in opening 3a to the bending of the lead 40 can be shortened, and the bending of the lead 40 can be made gentle. This makes it possible to prevent the lead wire 40 from being broken due to abrupt bending.
As shown in fig. 6, the support portion 18 is provided between the connection portions 27 and the first and second holding portions 25 and 26, and between the lead wire 40 and the shaft 8. This prevents the lead wire 40 from being crushed by the case 12 of the bracket 3 and the circuit board 15 due to the lead wire being close to the shaft 8, and the lead wire can be disconnected. The support portion 18 is not limited to the circular arc shape when viewed along the center axis C as shown in fig. 3, and may be, for example, a rectangular shape.
In addition, the substrate case 13 is generally easier to improve in strength than the circuit board 15. By forming the first holding portion 25 and the second holding portion 26 not on the circuit board 15 but on the board case 13, the strength of the first holding portion 25 and the second holding portion 26 can be increased, and the lead 40 can be fixed more reliably.
Fig. 7 is a plan view showing modification 1 of substrate case 13 according to embodiment 1. As shown in fig. 7, the first holding portion 25 and the second holding portion 26 may be formed in a rectangular shape when viewed along the center axis C. Fig. 8 is a plan view showing modification 2 of substrate housing 13 according to embodiment 1. As shown in fig. 8, the first holding portion 25 and the second holding portion 26 may be formed in a circular shape when viewed along the center axis C.
Fig. 9 is a sectional view of a ventilation fan 19 on which the DC brushless motor 1 according to embodiment 1 is mounted. The DC brushless motor 1 is mounted on the housing 33 of the ventilation fan 19, and the blower fan 20 is mounted on the shaft 8. After the frame 33 is embedded in the ceiling 21, the grill 22 is attached from below.
When DC brushless motor 1 is driven by energization, driving torque is generated to rotate blower fan 20. When the blower fan 20 is rotated, a flow of air shown by an arrow in fig. 9 is generated.
The configuration described in the above embodiment is an example of the contents of the present invention, and may be combined with other known techniques, and a part of the configuration may be omitted or modified within a range not departing from the gist of the present invention.
Description of the reference numerals
The brushless direct current motor comprises a brushless direct current motor 1, a frame 2, a bracket 3, a lead-out opening 3a, a stator 4, an end 4a, a core 5, a coil 6, a rotor 7, a shaft 8, a second bearing 9, a first bearing 10, a housing 12, a substrate housing 13, an output pin 14, a circuit substrate 15, a mounting surface 15a, an insulator 16, a support 18, a ventilation fan 19, a blower fan 20, a ceiling 21, a grid 22, a first holding part 25, a second holding part 26, a connecting part 27, an electronic part 31, a through hole 32, a frame 33, a lead 40 and a protective tube 41.
Claims (5)
1. An electric motor, comprising:
a cylindrical stator;
a rotor disposed inside the stator;
a shaft coupled to the rotor and extending along a central axis of the stator;
a substrate case provided at one end side of the stator in a direction along the central axis;
a circuit board provided on the opposite side of the stator with the substrate case interposed therebetween;
a connection portion provided on a mounting surface that is an opposite surface of a surface of the circuit board facing the stator;
a lead wire connected to the connection portion; and
a protective tube covering a periphery of the lead wire,
a first holding portion that protrudes toward the mounting surface side with respect to the circuit board, a second holding portion that protrudes toward the mounting surface side with respect to the circuit board and faces the first holding portion, and a support portion that is provided between the connection portion and the lead and between the shaft and the connection portion, and that protrudes toward the mounting surface side with respect to the circuit board,
the facing surfaces of the first holding portion and the second holding portion that face each other are perpendicular to the circuit substrate,
the protective tube is held by being sandwiched between the first holding portion and the second holding portion.
2. The motor according to claim 1,
the circuit board is provided with a notch through which the first holding portion and the second holding portion pass.
3. The motor according to claim 1,
the circuit board is provided with a hole through which the support portion passes.
4. The motor according to any one of claims 1 to 3,
the second holding portion is formed at a position closer to the connecting portion than the first holding portion,
when viewed along the center axis, the facing surfaces of the first holding portion and the second holding portion that face each other have a width that is narrower than a width of the facing surface of the first holding portion.
5. A ventilation fan is characterized by comprising:
the motor of any one of claims 1 to 4; and
a blower fan coupled to the shaft of the motor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/025961 WO2019016866A1 (en) | 2017-07-18 | 2017-07-18 | Electric motor and ventilation fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110892615A CN110892615A (en) | 2020-03-17 |
| CN110892615B true CN110892615B (en) | 2021-12-07 |
Family
ID=65015894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780091890.3A Active CN110892615B (en) | 2017-07-18 | 2017-07-18 | Motor and ventilation fan |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3657648B1 (en) |
| JP (1) | JP6714162B2 (en) |
| CN (1) | CN110892615B (en) |
| WO (1) | WO2019016866A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562373A (en) * | 2008-04-15 | 2009-10-21 | 本田技研工业株式会社 | Electric power collection/distribution ring of rotary electric machine |
| CN102214965A (en) * | 2010-04-07 | 2011-10-12 | 日本电产株式会社 | Spindle motor and storage disk drive having the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS585308B2 (en) | 1976-05-19 | 1983-01-29 | 株式会社山東鉄工所 | High pressure steamer sealing device |
| DE9112159U1 (en) * | 1991-09-30 | 1993-02-04 | Papst-Motoren Gmbh & Co Kg, 7742 St Georgen, De | |
| US5245237A (en) * | 1992-03-19 | 1993-09-14 | General Electric Company | Two compartment motor |
| US5793131A (en) * | 1996-08-07 | 1998-08-11 | General Electric Company | Systems and apparatus for controlling energization of electric motor windings, and methods of assembling motors |
| JP4537331B2 (en) * | 2006-02-23 | 2010-09-01 | 三菱電機株式会社 | Electric motor and ventilator |
| WO2012008135A1 (en) * | 2010-07-14 | 2012-01-19 | パナソニック株式会社 | Brushless motor and method of manufacturing thereof |
| JP5693114B2 (en) * | 2010-09-22 | 2015-04-01 | マブチモーター株式会社 | DC motor |
| JP5402966B2 (en) * | 2011-03-15 | 2014-01-29 | 株式会社豊田自動織機 | Electric compressor and wiring method for preventing displacement in electric compressor |
| CN104247225B (en) * | 2012-04-18 | 2017-11-07 | 三菱电机株式会社 | Motor |
| JP2014110673A (en) * | 2012-11-30 | 2014-06-12 | Sanyo Denki Co Ltd | Power line connection structure of stator |
-
2017
- 2017-07-18 EP EP17917981.7A patent/EP3657648B1/en active Active
- 2017-07-18 WO PCT/JP2017/025961 patent/WO2019016866A1/en unknown
- 2017-07-18 JP JP2019530268A patent/JP6714162B2/en active Active
- 2017-07-18 CN CN201780091890.3A patent/CN110892615B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562373A (en) * | 2008-04-15 | 2009-10-21 | 本田技研工业株式会社 | Electric power collection/distribution ring of rotary electric machine |
| CN102214965A (en) * | 2010-04-07 | 2011-10-12 | 日本电产株式会社 | Spindle motor and storage disk drive having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019016866A1 (en) | 2019-01-24 |
| EP3657648B1 (en) | 2023-11-15 |
| CN110892615A (en) | 2020-03-17 |
| JPWO2019016866A1 (en) | 2019-11-07 |
| EP3657648A1 (en) | 2020-05-27 |
| EP3657648A4 (en) | 2020-07-15 |
| JP6714162B2 (en) | 2020-06-24 |
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